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A258520 Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two sums of the central column and central row nondecreasing horizontally and vertically 1

%I #4 Jun 01 2015 13:33:27

%S 2371,7334,13616,23785,45771,91023,169230,300889,536665,960950,

%T 1692043,2898384,4959172,8588273,14914835,25562679,43219445,73301442,

%U 125444470,214770721,364129421,613091328,1036893028,1766260617,3007189322

%N Number of (n+2)X(2+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two sums of the central column and central row nondecreasing horizontally and vertically

%C Column 2 of A258522

%H R. H. Hardin, <a href="/A258520/b258520.txt">Table of n, a(n) for n = 1..210</a>

%H R. H. Hardin, <a href="/A258520/a258520.txt">Empirical recurrence of order 94</a>

%F Empirical recurrence of order 94 (see link above)

%e Some solutions for n=4

%e ..0..0..1..1....0..1..0..0....1..1..0..0....1..1..0..0....1..0..0..0

%e ..1..1..0..0....0..1..1..1....0..1..1..1....1..1..0..1....1..1..1..0

%e ..1..1..0..0....1..0..0..1....0..1..1..0....0..1..1..1....0..1..1..0

%e ..0..0..1..1....1..1..0..0....1..0..0..0....0..1..1..0....0..0..0..1

%e ..0..0..1..1....0..1..0..0....1..0..0..0....0..1..1..0....0..0..0..1

%e ..0..0..0..1....0..1..0..1....0..0..0..1....1..0..0..1....1..0..0..1

%Y Cf. A258522

%K nonn

%O 1,1

%A _R. H. Hardin_, Jun 01 2015

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)